Active compound release systems
    4.
    发明授权
    Active compound release systems 失效
    活性化合物释放系统

    公开(公告)号:US4661104A

    公开(公告)日:1987-04-28

    申请号:US681976

    申请日:1984-12-14

    摘要: In a therapeutic system such as a plaster for administration of an active compound through the skin and comprising a covering layer which is essentially impermeable to the active compound, an active compound reservoir layer and a protective layer which can be pulled off and which is essentially impermeable to the active compound, the improvement wherein the reservoir layer contain about 1-30% of active compound in an elastomer mixture comprising a predominantly amorphous olefinic (co)polymer with a glass transition temperature of

    摘要翻译: 在诸如用于通过皮肤施用活性化合物的石膏的治疗系统中,包括基本上不可渗透活性化合物的覆盖层,活性化合物储存层和可以被拉出并且基本上不渗透的保护层 对活性化合物的改进,其中储层在含有玻璃化转变温度<20℃的主要是无定形烯烃(共)聚合物的弹性体混合物中含有约1-30%的活性化合物,与0混合 至约50重量%的聚异丁烯,聚丁二烯油和/或石蜡油,以及增粘树脂。 因此,活性化合物可以在更长的时间内以相对大的量调节释放。

    Transparent polyamides
    7.
    发明授权
    Transparent polyamides 失效
    透明聚酰胺

    公开(公告)号:US4195164A

    公开(公告)日:1980-03-25

    申请号:US925227

    申请日:1978-07-17

    IPC分类号: C08G69/00 C08G69/26

    CPC分类号: C08G69/265

    摘要: Transparent copolyamides obtained by polycondensation of mixtures of positional isomeric diaminodicyclohexyl methanes and optionally further diamines and azelaic acid and optionally isophthalic and/or adipic acid. The copolyamides are valuable moulding compounds for the manufacture of various products such as sheets, films, plates, tubes, rods and containers.

    摘要翻译: 通过位置异构二氨基二环己基甲烷和任选的另外的二胺和壬二酸和任选的间苯二甲酸和/或己二酸的混合物的缩聚得到的透明共聚酰胺。 共聚酰胺是用于制造各种产品如片,薄膜,板,管,棒和容器的有价值的模塑料。